i want to find out interaction strength between two carbon atoms . can anybody explain how can i put vander wall interaction parameter in .fdf file in siesta code ? and what will be its output ?
You might want to have a look into the SIESTA manual
http://departments.icmab.es/leem/siesta/Documentation/Manuals/siesta-3.2-manual.pdf
page 76, key word "MM.Potentials"
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